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2970e9a2a8
Embedders that render theme editors, palette pickers, or custom
settings UI need to use the same color semantics as Ghostty.
This moves the shared parsing paths into terminal/color and exposes them
through libghostty-vt. Config color and palette parsing now delegate to
the same helpers, so CLI/config behavior and the C ABI stay in lockstep.
From C:
GhosttyColorRgb rgb;
ghostty_color_parse("ForestGreen", 11, &rgb);
uint8_t index;
ghostty_color_parse_palette_entry(
"0x10=#282c34", 12, &index, &rgb);
const GhosttyColorX11Entry* names =
ghostty_color_x11_names();
The exported color API is:
ghostty_color_parse
ghostty_color_parse_x11
ghostty_color_parse_palette_entry
ghostty_color_palette_default
ghostty_color_palette_generate
ghostty_color_luminance
ghostty_color_perceived_luminance
ghostty_color_contrast
ghostty_color_x11_names
ghostty_color_x11_name_count
The X11 name table is parsed once at comptime into null-terminated
entries in rgb.txt order. The existing case-insensitive map keeps the
same behavior for RGB.parse and +list-colors, while bindings can walk a
static table without allocations.